[Bug middle-end/89008] [7/8 Regression] O2 and O1 results differ for simple test

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89008

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Bill, you now need r268233 or earlier on the GCC 8 branch to reproduce the
latent issue.